Pipe-wrench.



C. E. SULLIVAN.

PIPE WRENCH.

APPLIQATION man MAR. 23. 1915.

Patented Apr. 4, 1916.

2 w (CE/Sullivan I CLARK E. SULLIVAN, OF GRAND RAPIDS, MICHIGAN.

PIPE-WRENCH.

Specification of Letters Patent.

Patented Apr. 4, 1916.

Application filed March 23, 1915. Serial No. 16,377.

To all whom it may concern:

Be it known that I, CLARK E. SUL IVAN, a citizen of the United States,residing at Grand Rapids, in the county of Kent and State of Michigan,have invented certain new and useful Improvements in Pipe- Wrenches; andI do hereby declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to male and use the same, reference being hadto the accompanying drawings, and to the letters and figures ofreference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in pipe wrenchesand the object in view is to produce a simple and eflicient device ofthis nature so constructed that the downward pull upon the handle willcause the jaws to move in opposite directions, thus affording a securegrip upon an object.

The invention comprises various details of construction, combinationsand arrangements of parts which will be hereinafter fully described,shown in the accompanying drawings and then specifically defined in theappended claim.

I illustrate my invention in the accompanying drawings, in which:

Figure 1 is a side elevation of a wrench made in accordance with myinvention. Fig. 2 is a sectional view longitudinally through rack andpinion mechanism, and Fig. 3 is a cross sectional view on line 33 ofFig. 1.

Reference now being had to the details of the drawings by letter, Adesignates a jaw having a shank portion B and serrations C upon theinner edge thereof, and D designates a jaw having a hollow offsetportion adapted to receive the shank B of the jaw A. Projecting from oneedge of the jaw D is a shank portion E having teeth F upon one edgethereof. A handle, designated by letter'H, has an offset portion H andhas an integral pinion wheel K, the teeth K of which are adapted toengage the teeth upon said shank at positions diametrically oppothrownaway from each other.

site and affording means whereby, as the handle is turned in onedirection or the other, the two jaws will be caused to move in oppositedirections. A rivet, designated by letter L. is passed through one endof the handle and centrally through the said integral gear wheel K andretains a washer O which, cooperating with the adjacent face of thehandle, serves to guide the cog teeth upon the shank portions of thejaws as the handle is turned.

In operation, it will be noted that, by the provision of a wrench madein accordance with my invention, a double action is afi'orded Wherby. asthe handle is drawn down, the shank portion B of the jaw A is caused tomove to the right, while the jaw D will be moved in the oppositedirection, thereby forming a secure gripping action upon an object whichis held to the nut securely by increased pressure and on a reverseswinging movement of the lever the jaws will be What I claim to be newis A pipe wrench comprising a jaw having a shank portion with serrationsupon its inner marginal edge, a second jaw having a hollow offsetportion adapted to receive the shank of the other jaw and provided witha shank portion having serrations upon one edge thereof, the face of thesecond referred to jaw being recessed, a handle having acircular-outlined end with a laterally extending boss, which hascircumferential teeth thereon adapted to engage the teeth upon theadjacent edges of the shank portions of said jaws, the circumference ofsaid circularoutlined part of the handle movable within the recess intheface of said second referred to jaw, a pin passing through said boss,and a disk held by the screw against the corresponding faces of theshank portions of the CLARK E. SULLIVAN.

Witnesses:

GEO. W. AsHBY,

V. A. VAN HORN.

